Related Party Transactions - Summary of Related Party Costs - Related Party Transactions (Detail) - USD ($)		3 Months Ended	12 Months Ended
		Mar. 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Related party costs, Incurred		$ 818,224	$ 3,742,760
Related party costs, Paid		200,000	1,720,311
Related party costs, Adjustment			(1,097,364)
Related party costs, Payable		9,661,657	9,043,433
Operating Expenses Including Organizational Costs [Member]
Related Party Transaction [Line Items]
Related party costs, Incurred		83,651	434,942
Related party costs, Paid		91,819	1,224,380
Related party costs, Payable			8,168
Transfer Agent Expenses [Member]
Related Party Transaction [Line Items]
Related party costs, Incurred		31,781	122,987
Related party costs, Paid		31,781	261,433
Asset Management Fees [Member]
Related Party Transaction [Line Items]
Related party costs, Incurred		588,929	2,363,753
Related party costs, Paid		76,400
Related party costs, Payable		6,261,010	5,748,481
Property Management Oversight Fees [Member]
Related Party Transaction [Line Items]
Related party costs, Incurred		113,863	469,044
Related party costs, Payable		1,253,766	1,139,903
Acquisition Expenses-Affiliates Capitalized [Member]
Related Party Transaction [Line Items]
Related party costs, Payable		1,980,000	1,980,000
Additional Paid In Capital Selling Commissions [Member]
Related Party Transaction [Line Items]
Related party costs, Incurred			97,460
Related party costs, Paid			104,960
Additional Paid-in Capital Dealer Manager Fees [Member]
Related Party Transaction [Line Items]
Related party costs, Incurred			97,460
Related party costs, Paid			104,960
Additional paid in Capital Stockholder Servicing Fees and Dealer Manager Servicing Fees [Member]
Related Party Transaction [Line Items]
Related party costs, Incurred	[1]		110,810
Related party costs, Paid	[1]		24,578
Related party costs, Adjustment	[1],[2]		(503,373)
Additional Paid-in Capital Offering Costs [Member]
Related Party Transaction [Line Items]
Related party costs, Incurred			46,304
Related party costs, Adjustment	[3]		(593,991)
Related party costs, Payable		$ 166,881	$ 166,881

[1] We paid our Former Dealer Manager an ongoing stockholder servicing fee that was payable monthly and accrued daily in an amount equal to 1/365^th of 1% of the purchase price per share of the Class T shares and Class Y shares and an ongoing dealer manager servicing fee that was payable monthly and accrued daily in an amount equal to 1/365^th of 0.5% of the purchase price per share of the Class W shares and Class Z shares sold in the Primary Offering.

[2] As a result of the suspension of our Primary Offering and termination of our Former Dealer Manager, we expected that the aggregate underwriting compensation from all sources would exceed 10% at the termination of the Public Offering. Accordingly, we ceased paying stockholder servicing fee and dealer manager servicing fees in April 2020, pursuant to the terms of the Dealer Manager Agreement. Additionally, as of March 31, 2021, we have not recorded a liability for the future payment of the stockholder servicing fees and dealer manager servicing fees.

[3] Pursuant to the Advisor Funding Agreement, our Advisor has agreed to fund, and will not be reimbursed for, 1.0% of the gross offering proceeds from the sale of Class Y shares and Class Z shares.  Our Advisor must reimburse us within 60 days after the end of the month in which the Public Offering terminated to the extent organization and offering expenses incurred in good faith exceed the 1.0% estimate being funded by the Advisor pursuant to the Advisor Funding Agreement. As a result of the suspension of our Primary Offering and termination of our Former Dealer Manager, we expected that the organization and offering costs incurred would exceed 1% at the termination of the Public Offering. Accordingly, during the year ended December 31, 2020, we recorded a receivable from our Advisor for organization and offering expenses incurred through December 31, 2020 in excess of the 1% limitation, which resulted in a $0.6 million reduction in due to affiliates and an increase in additional paid in capital in the accompanying consolidated balance sheet.